It is A. a loss of water and essential minerals in the body
Hemoglobin is a protein that is produced by the body that carries oxygen in the read blood cells the more read blood the more hemoglobin you have if the athletes have a high level of hemoglobin on the day of the race than it had ben days or weeks before, to shows that the athlete was blood doping.
A balanced diet supplies the nutrients your body needs to work effectively. Without balanced nutrition, your body is more prone to disease, infection, fatigue, and low performance. Children who don't get enough healthy foods may face growth and developmental problems, poor academic performance, and frequent infections.
It is wrong because it doesn’t factor things like amount of muscle in so it’s very inaccurate